Roadway roof drilling angle detection device
By designing a testing device that includes the diamond angle of the top plate of the measuring rod, positioning fixed ring and measuring line, the problem of the difficulty of measurement and the cumbersome technology of the existing technology of the top plate drilling of the roadway is solved. The measurement process.
Patent Information
- Application Number
- CN202420498713.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-03-14
AI Technical Summary
The measurement of the drilling angle of the tunnel roof is difficult, the existing technology is relatively cumbersome, and there is a lack of simple and accurate detection devices.
Design a detection device that includes the diamond angle of the lane roads that includes the measurement rod, the positioning ring and the measurement line. The measurement rod is inserted into the drilling hole, the positioning fixed ring is fixed on the measurement rod by bonding or mechanical bite, the measurement line is fixed on the measurement rod by positioning the fixed ring, and the other end is fixed. The ruler is used to measure the vertical distance between the top of the heavy hammer and the measuring rod.
The simple and accurate measurement of the angle of drilling of the top plate of the roadway, improved the measurement efficiency, the installation production is simple, and it is worth promoting.
Smart Images
Figure CN222391378U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of underground coal mine drilling angle detection, in particular to a tunnel roof drilling angle detection device. Background Art
[0002] In the directional pre-splitting blasting of the tunnel roof, the roof drilling hole inclination angle accuracy is required to be high. Since the roof drilling hole is located in the surrounding rock, it is difficult to measure its angle and the measurement process is relatively cumbersome. Therefore, a simple and accurate detection device for measuring its angle is needed. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a tunnel roof drilling angle detection device.
[0004] The technical solution adopted by the utility model is: a tunnel roof drilling angle detection device, comprising a measuring rod, a positioning fixing ring and a measuring line, the diameter of the measuring rod is 2-4 mm smaller than the borehole, and the length is not less than 1 m; the positioning fixing ring is a truncated cone-shaped annular structure, fixed on the outer wall of the measuring rod, the inner diameter of which is not less than the outer diameter of the measuring rod, the maximum value of the outer diameter is greater than the borehole diameter, the minimum value is less than the borehole diameter, and the distance from the end of the measuring rod extending into the borehole is not greater than the inclination length of the borehole; one end of the measuring line is fixed to the measuring rod through the positioning fixing ring, and a weight is fixed at the other end, which can straighten the measuring line, and a measuring ruler perpendicular to the measuring rod is slidably connected to the measuring rod for measuring the vertical distance between the top of the weight and the measuring rod.
[0005] Furthermore, the measuring rod is a steel pipe, a plastic pipe or a wooden stick.
[0006] Furthermore, the positioning and fixing ring is fixed on the measuring rod by bonding or mechanical biting.
[0007] Furthermore, the positioning and fixing ring is made of rubber.
[0008] Furthermore, the measuring line is a cotton line.
[0009] Furthermore, the measuring rod is provided with a scale along the axial direction for indicating the distance between the end of the measuring line fixed on the measuring rod and the measuring ruler.
[0010] The tunnel roof drilling angle detection device of the utility model is simple to manufacture, extremely convenient to measure the drilling angle, accurate in measuring results, high in efficiency, and worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural schematic diagram of the utility model;
[0012] Figure 2It is a use schematic diagram of the utility model.
[0013] In the figure: 1. Measuring rod; 2. Positioning and fixing ring; 3. Measuring line; 4. Weight; 5. Measuring ruler; 6. Drill hole. DETAILED DESCRIPTION
[0014] In order to better understand the purpose, structure and function of the utility model, a tunnel roof drilling angle detection device of the utility model is further described in detail below in conjunction with the accompanying drawings.
[0015] like Figure 1 As shown, a tunnel roof drilling angle detection device includes a measuring rod 1, a positioning and fixing ring 2 and a measuring line 3. The diameter of the measuring rod 1 is 2-4 mm smaller than the borehole, and the length is not less than 1 m. The measuring rod 1 is made of a rigid material, such as a steel pipe, a plastic pipe or a wooden stick. The positioning and fixing ring 2 is a truncated cone-shaped annular structure, which is fixed to the measuring rod 1 by bonding or mechanical bite. The inner diameter of the positioning and fixing ring 2 is not less than the outer diameter of the measuring rod, the maximum value of the outer diameter is greater than the diameter of the borehole 6, and the minimum value is less than the diameter of the borehole 6. The distance from the end of the measuring rod 1 extending into the borehole 6 is not greater than the inclined length of the borehole 6. The measuring line 3 is made of a soft wire, such as a cotton wire, one end of which is fixed to the measuring rod 1 through the positioning and fixing ring 2, and the other end is fixed with a weight 4, which can straighten the measuring line 3. The measuring rod 1 is slidably connected to a measuring ruler 5 perpendicular to the measuring rod 1, which is used to measure the vertical distance between the top of the weight 4 and the measuring rod 1.
[0016] like Figure 2 As shown, the steps are as follows:
[0017] 1. After drilling, insert the measuring rod 1 into the drilled hole 6 to the positioning fixing ring 2 and fix it.
[0018] 2. Use the measuring ruler 5 to read the minimum vertical distance H between the top of the weight 4 and the measuring rod 1.
[0019] 3. The included angle between the measuring rod 1 and the measuring line 3, i.e. the drilling angle, is obtained by calculation: а=arcos(H / L), where L is the length of the measuring line 3.
[0020] The tunnel roof drilling angle detection device of the utility model is simple to manufacture, extremely convenient to measure the drilling angle, accurate in measurement, high in efficiency, and worthy of promotion.
[0021] In an optional embodiment, a scale (not shown) is provided on the measuring rod 1 along the axial direction to indicate the distance between the end of the measuring line 3 fixed on the measuring rod 1 and the measuring ruler 5. The accuracy of the reading of the measuring ruler 5 can be quickly verified according to the Pythagorean theorem.
[0022] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.
Claims
1. A tunnel roof drilling angle detection device, characterized in that: The invention comprises a measuring rod (1), a positioning and fixing ring (2) and a measuring line (3), wherein the diameter of the measuring rod (1) is 2-4 mm smaller than the borehole and the length is not less than 1 m; the positioning and fixing ring (2) is a truncated cone-shaped annular structure, fixed to the outer wall of the measuring rod (1), the inner diameter of which is not less than the outer diameter of the measuring rod (1), the maximum value of the outer diameter is greater than the diameter of the borehole (6), the minimum value is less than the diameter of the borehole (6), and the distance between the inner diameter and the end of the measuring rod (1) extending into the borehole (6) is not greater than the inclined length of the borehole (6); one end of the measuring line (3) is fixed to the measuring rod (1) through the positioning and fixing ring (2), and the other end is fixed with a weight (4) so as to straighten the measuring line (3); a measuring ruler (5) perpendicular to the measuring rod (1) is slidably connected to the measuring rod (1) and is used to measure the vertical distance between the top of the weight (4) and the measuring rod (1).
2. The tunnel roof drilling angle detection device according to claim 1, characterized in that: The measuring rod (1) is a steel pipe, a plastic pipe or a wooden stick.
3. The tunnel roof drilling angle detection device according to claim 1, characterized in that: The positioning and fixing ring (2) is fixed on the measuring rod (1) by bonding or mechanical biting.
4. The tunnel roof drilling angle detection device according to claim 1 or 3, characterized in that: The positioning and fixing ring (2) is made of rubber.
5. The tunnel roof drilling angle detection device according to claim 1, characterized in that: The measuring line (3) is a cotton line.
6. The tunnel roof drilling angle detection device according to claim 1, characterized in that: The measuring rod (1) is provided with a scale along the axial direction, which is used to indicate the distance between the end of the measuring line (3) fixed on the measuring rod (1) and the measuring ruler (5).